Relationship Editor
Craft CMS has powerful features to create and edit entries via frontend templates. However, editing element reltionship fields such as Entries, Users, Categories, and Tags fields can be tricky, since they will only save the related elements submitted in the request, so your frontend templates need to resubmit all of the previously-selected elements, making for more complicated frontend templates.
Relationship Editor provides a new action specifically for adding and removing elements from an element relationship field without having to resubmit all of the existing selections.
You can use Relationship Editor to allow users to create wishlists, or other collections of elements quickly and easily in your frontend templates. The plugin respects the same editing permissions as Craft's native front end entry forms.
To install this plugin, copy the command above to your terminal.